Calliopsis flavifrons Smith, 1853:129, ♂. ♂, East Florida (F. Smith, leg. E. Doubleday, Esq.). - Cresson, 1879Cresson, E.T. 1879. Catalogue of North American Apidae. Transactions of the American Entomological Society and Proceedings of the Entomological Section of the Academy of Natural Sciences 7:215-232. (distribution); Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Mitchell, 1960Mitchell, T.B. 1960. Bees of the Eastern United States. Volume I. Technical bulletin (North Carolina Agricultural Experiment Station) 141:1-538.:293 (taxonomy [The type of this species could not be found in the British Museum, nor is it among the Smith types at the Hope Museum in Oxford. The description is of the male, and it agrees in all the characters mentioned with the male of C. coloradensis Cresson. Cockerell (1905) found a female in the British Museum collection bearing a flavifrons type label, but the difference in sex, and the fact that his description bears very little resemblance to that of Smith, indicates that two different specimens were involved. Cockerell's description seems to agree with the female of andreniformis, and it may be that a specimen of that species erroneously received the flavifrons label, and the true type of flavifrons was lost. Cockerel1 does not mention andreniformis in his paper (1905), but the close agreement of his description with that species suggests the possibility that it was that type which he had before him.]); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution).
